package com.atguigu.service.impl;

import cn.hutool.core.lang.UUID;
import com.atguigu.service.IMessageProvider;
import org.springframework.cloud.stream.annotation.EnableBinding;
import org.springframework.cloud.stream.messaging.Source;
import org.springframework.integration.support.MessageBuilder;
import org.springframework.messaging.MessageChannel;
import org.springframework.stereotype.Service;

import javax.annotation.Resource;

/**
 * TODO
 *
 * @Description
 * @Author dubao
 * @Date 2023年 06月 07日 14:56
 **/
@EnableBinding(Source.class) // 可以理解为是一个消息的发送管道的定义
public class MessageProviderImpl implements IMessageProvider {
    @Resource
    private MessageChannel output; // 消息的发送管道

    @Override
    public String send() {
        String serial = UUID.randomUUID().toString();
        this.output.send(MessageBuilder.withPayload(serial).build()); // 创建并发送消息
        System.out.println("***serial: " + serial);

        return serial;
    }
}
